P2 spectrometer

November 17-23, 2020: Test beamtime at MAMI
  • Test of modified prototype of the luminosity monitor
  • ¬†First test of new sampling ADC
July 6-10, 2020: Test beamtime at MAMI
  • Test of new prototype of the luminosity monitor

  • ¬†Test of enhanced version of PMT base and preamplifier
November 5-11, 2019: Test beamtime at MAMI
  • Test of new prototype of the PMT base together with preamplifier


  • Measurements with low beam rate (kHz range). DAQ: CAEN V965 QDC
  • Measurements with beam rates which are equivalent to those expected under real P2 data taking conditions (GHz range). DAQ: Qweak Sampling ADC
  • Investigation of sensitivity of the electronics to radiation
March 21-25, 2019: Test beamtime at MAMI
  • A fused silica bar with the geometry foreseen for the final P2 setup was tested at the MAMI beam. The bar has a length of 65 cm. The detector response on various impact positions and angles of the incident electrons was studied.
  • Prototypes for a luminosity monitor were also tested. Cherenkov media were fused silica and aerogel.